What is a Parasymphyseal fracture?
When teeth are present, the fracture line passes between the mandibular central incisors. Fractures occurring in the area of the mandible from cuspid to cuspid, but not in the midline, are classified as parasymphyseal (as seen in the image below).
What is Unfavourable fracture?
In favorable fractures, the bony fragments are drawn together by the muscle distraction, whereas in unfavorable fractures, the bony segments become displaced by the muscle forces. These forces that render the fracture unfavorable are exerted by various muscles such as masseter, temporalis, and medial pterygoid muscle.
What is impaction fracture?
In fracture. An impacted fracture occurs when the broken ends of the bone are jammed together by the force of the injury. A comminuted fracture is one in which the broken ends of the bone are shattered into many pieces.
What is a maxillary fracture?
A maxilla fracture happens when the maxilla becomes cracked or broken. This often happens due to injuries to the face, such as from falling, a car accident, getting punched, or running into an object.
What is Dentoalveolar fracture?
Dentoalveolar fracture is defined as a fracture in the bone surrounding the teeth without any extension to the basal bones of the maxilla or mandible [1, 2].
What is guardsman fracture?
A guardsman fracture, also referred to as parade ground fracture, is one of the common forms of mandibular fracture which is caused by a fall on the midpoint of the chin resulting in fracture of the symphysis as well as both condyles.
What is a Favourable and Unfavourable fractures of mandible?
Mandible fractures are favorable when muscles tend to draw bony fragments together and unfavorable when bony fragments are displaced by muscle forces. Vertically unfavorable fractures allow distraction of fracture segments in a horizontal direction.
What is a bilateral mandible fracture?
Bilateral body or parasymphysis fractures are sometimes termed “flail mandible”, and can cause involuntary posterior movement of the tongue with subsequent obstruction of the upper airway. Displacement of the condyle through the roof of the glenoid fossa and into the middle cranial fossa is rare.
What does angulated fracture mean?
Angulated fractures: The two ends of the broken bone are at an angle to each other. Translated fractures: The ends of the bone have shifted out of alignment. Rotated fractures: The bone spun (rotated) when it broke. Greenstick fractures: One side of the bone is broken, causing the other side to bend.
What does impaction mean?
Definition of impaction : the act of becoming or the state of being impacted especially : lodgment of something (such as feces) in a body passage or cavity.
What is maxilla and mandible?
The maxilla (plural: maxillae /mækˈsɪliː/) in vertebrates is the upper fixed (not fixed in Neopterygii) bone of the jaw formed from the fusion of two maxillary bones. In humans, the upper jaw includes the hard palate in the front of the mouth. The mandible is the movable part of the jaw.
What are the causes of maxillary fracture?
Maxillary fractures are common in patients sustaining facial trauma and may be caused by road traffic accidents, sports, or assault.